Wook Jeong

A Holdings Corp. engages in the mobile communication business. It operates through the Core and Strategy segments. The Core segment handles advertising, communication, and content business. The Strategy segment includes FinTech services such as Line Pay. It also deals with artificial intelligence and e-commerce. The company was founded on September 4, 2000 and is headquartered in Tokyo, Japan.

NHN USA, Inc. provided online games and platform development services. It offered casual card, puzzle, board, arcade style, console quality online video, online role-playing, shooter and action adventure games. The company was founded in 2005 and was headquartered in Irvine, CA.

Part of PlayNext, Inc., Ijji Games LLC provides online games and platform development services. The private company is based in Irvine, CA. Ijji Games was acquired by PlayNext, Inc. from NAVER Corp. on January 05, 2012.

Neptune, Inc. develops mobile games. Its games include Puzzle TANTAN, Perfect Lineup, and Baseball Master. The company was founded on January 31, 2012 by Wook Jeong and is headquartered in Seongnam, South Korea.

HNC Games Co., Ltd. is a South Korean company that develops online gaming software. The company is based in Seoul, South Korea. The company was founded in 2013. Ho-Jun Son has been the CEO of the company since 2013.